Scientists discover six dead galaxies from three billion years ago that ran out of cold gas and expired when the universe was at “the peak epoch of star formation”
, suggests that “Very low amounts of molecular gas seem to be responsible for this, at least in some cases, although morphological gas stabilization, shock heating or activity associated with accretion onto a central supermassive black hole are invoked in other cases.”it more simply: noting that when the universe was 3 billion years old, at 20 percent of its current age, “it experienced the most prolific period of star birth in its history.
NASA calls the study “a classic example of the harmony between Hubble and ALMA observations.” According to NASA, the Hubble Space Telescope “pinpointed where in the galaxies the stars exist, showing where they formed in the past.” And ALMA showed astronomers where stars could form in the future if enough fuel were present “by detecting the cold dust that serves as a proxy for the cold hydrogen gas.
The REQUIEM team were able to understand the formation of these six dead galaxies by combining the incredible resolution of Hubble, ALMA and the strong gravitational lensing. The six galaxies, NASA says ,”appear as they did only a few billion years after the Big Bang.” According to the NASA news release, even minor mergers and accretions of nearby small galaxies and gas are not enough to revive these kinds of dead galaxies; their addition to the dead galaxy “mostly just ‘puffs up’ the galaxies.” Whitaker describes a possible scenario of star formation turning back on as “a kind of frosting.
Australia Latest News, Australia Headlines
Similar News:You can also read news stories similar to this one that we have collected from other news sources.
Burger King’s Keep It Real Meals Feel Like a Glitch in the Fast-Food SimulationBurger King launched three new celebrity “Keep It Real Meals,” titled after artists’ real names, to promote its banning of 120 artificial ingredients. ralter taste-tested them all
Read more »
Fast-moving brush fire prompts evacuations in San BernardinoThe fire ignited after a vehicle fire spread to nearby vegetation, officials said.
Read more »
Fast-Food Chains Test Reusable Cups, Sandwich BoxesBurger King and McDonald’s have signed up to try Loop, a program that requires customers to return reusable packaging.
Read more »
Rolling Stone Explores the Fast-Pace World of TikTok With New Podcast: Exclusive
Read more »
Scarlett Moffatt goes for a six-mile hike in the pouring rainScarlett Moffatt joined Paralympic athlete Will Bayley for a walk up a 'small mountain' in miserable weather on Wednesday morning. The former Gogglebox star joked their attire made them look like bin bags as they began their hike
Read more »